エルニーニョ周期:太平洋の自然な振動器で,大気系を構成する

N E Graham, W B White

Science (New York, N.Y.)

|June 3, 1988

まとめ

エルニーニョ-南方振動 (ENSO) 周期は,自然な振動器である可能性があります. 最近の証拠は,海洋-大気動力学と太平洋の海面温度との単純な結合がENSOを駆動することを示唆しています.

科学分野:

海洋学海洋学海洋学
大気科学大気科学
気候のダイナミクス

背景:

エルニーニョ・サザン・オシレーション (ENSO) は,地球規模の海洋および大気変動に大きく影響します.
ENSOの準周期性は,最近の研究にもかかわらず,ほとんど理解されていない特性であり続けています.
ENSOメカニズムの理解は,気候パターンの予測に不可欠です.

研究の目的:

ENSOの準周期性の基本的な特徴を説明するために.
ENSOの自然結合振動器仮説を支持する証拠を提示する.
ENSOサイクルを駆動する提案されたメカニズムを概説する.

主な方法:

複数の情報源からの最近の証拠のレビュー.
海と大気の相互作用の分析.
東赤道太平洋における海面温度動態の調査.

主要な成果:

最近の証拠によると,ENSOは自然な振動器として機能している.
熱帯大気循環と海洋動態の間の単純な結合が特定されています.
太平洋の赤道東部の海面温度が重要な役割を果たしています.

結論:

ENSOサイクルは,自然に結合された振動器メカニズムによって動かされる可能性が高い.
この振動器は,大気,海洋の上層層,海面温度との相互作用を伴う.
この仮説は,ENSOの準周期的性質を理解するための枠組みを提供します.

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